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Laertes and Polonius both object to Ophelia's relationship with Hamlet, warning her to be aware of her surroundings and to not get hurt by the possibility of Hamlet choosing someone else as a girlfriend or wife. Laertes and Polonius' most convincing argument is warning Ophelia to defend her purity. Their advice reveals that both Laertes and Polonius are very worried about Ophelia, as well as very protective of her. Moreover, Ophelia tends to become oblivious of her own decisions, as she is always abiding to her brother and father's advice. Laertes and Polonius may believe that women in general do not realize their surroundings and can get put into a position where they can be completely ignored or oblivious, therefore they are protecting Ophelia by warning her for her future.